Joseph jauch



(No Model.)

J. JAUCH.

CENTRAL DRAFT LAMP. No; 431,359. Patented Jul y 1, 1890.

Hill

UNITED STATES PATENT OFFICE.

JOSEPH JAUCH, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE BRADLEY & HUBBARDMANUFACTURING COMPANY, OF SAME PLACE.

CENTRAL-DRAFT LAM P.

SPECIFICATION forming part of Letters Patent No. 431,359, dated July 1,1890.

Application filed November 25 1889. Serial No. 831,491- (No model.)

To all whom it may concern:

Be it known that I, JOSEPH JAUOH, of Meriden, in the county of New Havenand State of Connecticut, have invented a newlmprovement inCentral-Draft Lamps; and I do 'hereby declare the following, when takenin connection with accompanying drawings and the letters of referencemarked thereon, to be afull, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in

Figure 1, a vertical central section through the central draft-tube of alamp, showing a side view of the inner tube, its distributer andsupports, the tube B and its support be- 1ng in partial section. Fig. 2represents the distributing-tube complete in perspective detached; Fig.3, a transverse section on liners a: of Fig. 1; Fig. 4, a sectional sideview; Fig. 5, a transverse section illustrating a modification.

This invention relates to an improvement in that class of lamps whichemploy a tubular wick,and in which the wick is arranged around a centraltube, which tube also serves as an air-passage to supply air to theinterior of the flame, and particularly to lamps of this class in whicha perforated air-distributer is e1nployed within the flame and near itsbase to discharge air laterally into the flame to produce more perfectcombustion.

Central-draft lamps having an air-distributer within the flame are oftwo classes: first, a lamp in which the distributer covers the upper endof the central draft or wick tube, so that all the air coming throughthe said central tube must pass through the perforations of thedistributer to the flame, and, second, a lamp in which a Vertical tubeis arranged within the central draft or wick tube concentric therewithand of considerably less diameter than the said wick-tube, and so as toleave an air-space between the two tubes, that a portion of the aircoming through the central draft-tube may pass outside the inner tubedirectly to the base of the flame, while the remainder of the air willpass up through through the said inner tube will be directed into theflame. It is to this latter construction of lamps that my inventionparticularly relates, and it has for its object a simple constructioncombining the inner tube and distributer in such manner that it maybeintroduced or removed from the central draft or wick tube and yet befirmly supported therein; and it consists in the construction ashereinafter described, and particularly recited in the claim.

In illustrating the invention I show onlythe central tube A of acentral-draft lamp. The construction of the fount or the burner maybeanyof the usual constructions,thiscem tral tube A being common to allsuch lamps.

13 represents the inner tube, which is of considerably less diameterthan the tube A, and is arranged vertically in the said tube A, so as toleave a free space C between the tubes A and B. The tube B is providedat its upper end with a distributer D, which may be any of the knowndistributers adapted to receive air through the tube B, and perforatedso as to discharge that air in jets into the flame. The lower end of thetube B is open to the atmosphere below.

To firmly support the tube B within the tube A, but yet allow air topass freely around it and at the same time to distribute that air so asto avoid irregular flow of air through the tube C to the flame, Icombine with the tube B a surrounding tube E of larger diameter than thetube 13, but less than the diameter of the tube C. This is made fast tothe tube B concentric therewith, and from the surface of the tube Eradiallyprojecting wings F are formed, the diameter through the saidwings corresponding substantially to the internal diameter of the tubeC. The tubeA is constructed with a suitable stop G, here represented asan annular internal bead in the tube ata point corresponding to thelower end of the wings F, and so that when the distributer-tube is setinto the tube Athe wings F will come to a bearing on the stop G andsupport the distributer in the proper relative position to the flame,the wingsF being of a length and so as to take sufficient hearing withinthe tube A to support the tube B in its proper vertical position, andconsequently the distributor in its proper central position.

The tube E-is constructed with openings or perforations H I, more orless in number. (See Figs. 2 and 3.) In the best construction of theseperforations or openings H I the open ings H are formed by cuttingaround three sides of the opening and turning the parts so cut inward toform wings J the width of the Wings corresponding to the distancebetween the tubes E and the tube B, as seen in Fig. 3. These wings Jserve to make a connectionbetween the tubes B and E, so as to firmlysupport them in their proper concentric relation to each other. Theopenings I are best constructed in the same manner as the openings H,except that the metal is turned outward to form the wings F, as clearlyseen in Fig. 3; but the tube E may be perforated, as seen in Figs. 4cand 5, and the wings F be of a width to extend into the inner tube andbe secured thereto, the tube E interlocking with the wings, as seen inFig. 4.

The division of the space between the two tubes and the perforations ofthe tube E serves to distribute the air passing into the space betweenthe tubes A and B, so as to prevent irregular currents, which would beliable to occur were the said space open or not thus broken.

By the employment of the vertical wings the further advantage isattained of firmly supporting the inner tube and the distributor itcarries in the proper relative and concentric position with relation tothe principal central draft or wick tube A.

I claim In a central-draft lamp, the combination of a tube B,concentrically arranged within the central draft-tube and so as to leavea space between the two, the said tube B carryinga distributor at itsupper end, its lower end open to the atmosphere below, the tube E, oflarger diameter than the tube B, but less than the diameter of thecentral draft-tube, the tube E constructed with openings andradially-projectin g vertical wings turned outward and inward from saidopenings, the said outer wings of a diameter corresponding to theinternal diameter of the said central draft-tube and the innerwingsadapted to engage the said tube E, whereby the said tube E becomessubstantiallya part of the tube B, and the central draft-tubeconstructed with a stop, as G, substantially as and for the purposedescribed.

JOSEPH JAUCH.

Witnesses:

F. B. FAIRBANKS, O. D. NEVVBURY.

